[isilence:zc/rx-pp-provider 19/31] io_uring/zc_rx.h:31:2: warning: void function 'io_unregister_zc_rx_ifq' should not return a value

[isilence:zc/rx-pp-provider 19/31] io_uring/zc_rx.h:31:2: warning: void function 'io_unregister_zc_rx_ifq' should not return a value

[kernel test robot]

tree:   https://github.com/isilence/linux zc/rx-pp-provider
head:   4b8de8977565096e38b6da993c68da6f2ef9b89c
commit: a637a9b59d1de6a86ea926ae416dd7bc1f4b6da1 [19/31] io_uring: add interface queue
config: i386-randconfig-012-20231210 (https://download.01.org/0day-ci/archive/20231211/202312110113.8edLMeAh-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231211/202312110113.8edLMeAh-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312110113.8edLMeAh-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from io_uring/io_uring.c:98:
>> io_uring/zc_rx.h:31:2: warning: void function 'io_unregister_zc_rx_ifq' should not return a value [-Wreturn-type]
           return -EOPNOTSUPP;
           ^      ~~~~~~~~~~~
   io_uring/io_uring.c:2923:2: error: call to undeclared function 'io_unregister_zc_rx_ifqs'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           io_unregister_zc_rx_ifqs(ctx);
           ^
   io_uring/io_uring.c:2923:2: note: did you mean 'io_unregister_zc_rx_ifq'?
   io_uring/zc_rx.h:29:20: note: 'io_unregister_zc_rx_ifq' declared here
   static inline void io_unregister_zc_rx_ifq(struct io_ring_ctx *ctx)
                      ^
   io_uring/io_uring.c:3116:4: error: call to undeclared function 'io_shut_zc_rx_ifqs'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                           io_shut_zc_rx_ifqs(ctx);
                           ^
   1 warning and 2 errors generated.
--
   In file included from io_uring/zc_rx.c:12:
>> io_uring/zc_rx.h:31:2: warning: void function 'io_unregister_zc_rx_ifq' should not return a value [-Wreturn-type]
           return -EOPNOTSUPP;
           ^      ~~~~~~~~~~~
>> io_uring/zc_rx.c:14:5: warning: no previous prototype for function 'io_allocate_rbuf_ring' [-Wmissing-prototypes]
   int io_allocate_rbuf_ring(struct io_zc_rx_ifq *ifq,
       ^
   io_uring/zc_rx.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int io_allocate_rbuf_ring(struct io_zc_rx_ifq *ifq,
   ^
   static 
>> io_uring/zc_rx.c:34:6: warning: no previous prototype for function 'io_free_rbuf_ring' [-Wmissing-prototypes]
   void io_free_rbuf_ring(struct io_zc_rx_ifq *ifq)
        ^
   io_uring/zc_rx.c:34:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void io_free_rbuf_ring(struct io_zc_rx_ifq *ifq)
   ^
   static 
   io_uring/zc_rx.c:59:5: error: redefinition of 'io_register_zc_rx_ifq'
   int io_register_zc_rx_ifq(struct io_ring_ctx *ctx,
       ^
   io_uring/zc_rx.h:24:19: note: previous definition is here
   static inline int io_register_zc_rx_ifq(struct io_ring_ctx *ctx,
                     ^
>> io_uring/zc_rx.c:98:6: warning: no previous prototype for function 'io_unregister_zc_rx_ifqs' [-Wmissing-prototypes]
   void io_unregister_zc_rx_ifqs(struct io_ring_ctx *ctx)
        ^
   io_uring/zc_rx.c:98:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void io_unregister_zc_rx_ifqs(struct io_ring_ctx *ctx)
   ^
   static 
>> io_uring/zc_rx.c:111:6: warning: no previous prototype for function 'io_shut_zc_rx_ifqs' [-Wmissing-prototypes]
   void io_shut_zc_rx_ifqs(struct io_ring_ctx *ctx)
        ^
   io_uring/zc_rx.c:111:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void io_shut_zc_rx_ifqs(struct io_ring_ctx *ctx)
   ^
   static 
   5 warnings and 1 error generated.


vim +/io_unregister_zc_rx_ifq +31 io_uring/zc_rx.h

    17	
    18	#if defined(CONFIG_PAGE_POOL)
    19	int io_register_zc_rx_ifq(struct io_ring_ctx *ctx,
    20				  struct io_uring_zc_rx_ifq_reg __user *arg);
    21	void io_unregister_zc_rx_ifqs(struct io_ring_ctx *ctx);
    22	void io_shut_zc_rx_ifqs(struct io_ring_ctx *ctx);
    23	#else
    24	static inline int io_register_zc_rx_ifq(struct io_ring_ctx *ctx,
    25				  struct io_uring_zc_rx_ifq_reg __user *arg)
    26	{
    27		return -EOPNOTSUPP;
    28	}
    29	static inline void io_unregister_zc_rx_ifq(struct io_ring_ctx *ctx)
    30	{
  > 31		return -EOPNOTSUPP;
    32	}
    33	#endif
    34	

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